Re: Possible speedup in draw() (crossfire0.8) (fwd)

[Morten Hanshaugen <>]

> At present there are 13 colors including black and white, what you are 
> purposing is to create 169 GCs

No, just 156 (n*n-n).

> I am relatively new to X windows, so I have one question: How much memory will
> be required to define 169 GCs??, Also consider that colors may be added, which
> would require yet more GCs to be defined.

The GC is defined like this (look at XLib.h):

typedef struct _XGC {
    XExtData *ext_data; /* hook for extension to hang data */
    GContext gid;       /* protocol ID for graphics context */
    Bool rects;         /* boolean: TRUE if clipmask is list of rectangles */
    Bool dashes;        /* boolean: TRUE if dash-list is really a list */
    unsigned long dirty;/* cache dirty bits */
    XGCValues values;   /* shadow structure of values */
} *GC;

The size of the GC struct looks like some 200 bytes, and 13 colours would 
give some 32 K extra. 64 colours would give ca. 800 K if I am not wrong?

No problem with 13 colors, but 64, I don't know. Test it out.

	Morten